● NH OH:较强还原剂(不引起污染) NH2OH+AgBr→Ag+HBr+H2O+N2(或N2O) N2+5H++4e=N2H5 -0.23V N2+2H+2H2+2e=2NH2OHA°=-1.87V N2t4H20 +4e=N2H4 +40H ( PB=-151V N2+4H2O+2e =2NH2OH-F2OH (B=-304V⚫ NH2OH：较强还原剂（不引起污染） NH2OH+AgBr→Ag+HBr+H2O+N2 (或N2O) N2＋5H ＋ ＋4e ＝N2H5 ＋ A ＝-0.23V N2＋2H ＋ ＋2H2O＋2e ＝2NH2OH A ＝-1.87V N2＋4H2O ＋4e ＝N2H4 ＋4OH－ B ＝-1.51V N2＋4H2O＋2e ＝2NH2OH＋2OH－ B ＝-3.04V